Title: Image coding device, method and computer program
Application Number: 200610145179 Application Date: 2006.11.17
Publication Number: 1980393 Publication Date: 2007.06.13
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04N7/32;H04N7/26;H03M7/40
Applicant(s) Name: Matsushita Electric Ind Co., Ltd. Address:
Inventor(s) Name: Chiba Takuma;Tasaka Kei
Attorney & Agent: zhouyan ling zhude he
Abstract:
    Provided is an image coding device in which entropy coding is applied to binarized data, thereby processing image data at a high speed. The image coding device has: an image coding unit which codes image data; an entropy coding unit which binarizes the coded image data and applies entropy coding to the binarized data; a coding amount prediction unit which obtains, based on information regarding the image data which is obtained from the image coding unit, a predictive value corresponding to a coding amount of the image data on a predetermined data unit basis, supposing that the entropy coding were applied to the image data, prior to the actual binarizing; and a coding amount comparing unit which compares the predictive value to a predetermined threshold value; a I_PCM decision unit which outputs a selection signal indicating the image data on a predetermined data unit basis or I_PCM data, which is selected based on a result of the comparing; and an output selection unit and an output unit which output the selected data indicated by the selection signal.
Time: 7